Federal Office of Meteorology and Climatology MeteoSwiss

Ozone Layer

Atmospheric Ozone Monitoring

The ozone layer is well known for its protective effect of life on earth's surface by screening the damaging solar UV radiation. It is therefore important to regularly monitor the amount of ozone around the globe. MeteoSwiss is regularily measuring the ozone present in the upper atmosphere above Switzerland with different instruments.
MeteoSwiss ozone monitoring

 

The figure presents the last 14 days of ozone measurements above Arosa / Switzerland

Updated on 15.10.2008, 18.00

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Total ozone amount above Arosa

The transparency of the atmosphere to the UV radiation from the sun is measured with spectrophotometers. From these measurements, the total amount of ozone contained in the column of atmosphere above the Arosa Observatory is calculated. In the figure to the left, the daily mean ozone is reported for the last 14 days.

 

The figure present the last atmopsheric ozone profile measured above Payerne / Switzerland

Updated on 15.10.2008, 18.00

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Ozone profile above Payerne

The ozone profile is recorded using an ozone sonde attached to an aerological balloon. The ozone is measured in situ and the data are transmitted to the Payerne station during the ascent. Such profiles are measured three times per week on Monday, Wednesday and Friday noon. In the figure on the left, the last valid ozone profile is presented.

 

Ozone

Ozone close to ground level is like tear gas. It arises from nitrogen oxides and volatile organic compounds when there is intensive solar radiation, and above all in the spring and summer.Ozone

Global ozone distribution

Northern hemisphere ozone distribution

Among others, the Arosa data are used to construct the Northern Hemisphere ozone distribution.

Satellites measurements

Global ozone map from Satellites measurements

The global ozone distribution is efficiently measured by instruments on satellites.

Tomorrow ozone field

Map of the forecasted ozone field over the Northern hemisphere

The conjunction of the data and a forecast model allow to predict the ozone distribution.
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